President Obama (r.) and San Francisco Mayor Gavin Newsom (l.) joke in San Francisco, on Oct. 21, after Obama arrived for fund raising events. Newsom is running for Calif. Lt. Gov. Paul Sakuma/AP

Shirley Morrison (r.) a member of the social-activist group 'Seattle Raging Grannies,' shouts anti-war slogans along with Lyle (l.) and Barbara Mercer (c.) as they demonstrate on Oct. 21, outside Hec Edmundson Pavilion on the University of Washington campus in Seattle, where a rally with President Obama and Sen. Patty Murray (D) of Wash., was held later in the day. Ted S. Warren/AP

Former President Bill Clinton (l.) joins Democratic gubernatorial candidate Alex Sink for an early vote rally in Miami at Miami Dade College North Campus, on Oct. 2. President Clinton addressed how critical voting for Sink is, especially during an election year that will so greatly impact the future of Florida. Marice Cohn Band/The Miami Herald/AP

In this Oct. 20 photo, Florida Democratic senate candidate Rep. Kendrick Meek (D) of Fla. (l.) listens to former President Bill Clinton address supporters during a campaign rally for Meek at the University of Central Florida in Orlando, Fla. Clinton is campaigning for Democratic candidates at a pace no one can match, drawing big crowds and going to states that President Obama avoids. John Raoux/AP

President Obama holds a backyard conversation on women and the economy in Seattle, Washington on Oct. 21. Obama is on a four-day, five-state swing to support Democrats in the upcoming election. Kevin Lamarque/Reuters

Sen. Barbara Boxer (D) of Calif. (c.) is joined by airline pilots, flight attendants and air traffic controllers as she emphasizes her record on airline safety at Bob Hope Airport in Burbank, Calif. on Oct. 18. Boxer is running for re-election against Republican Carly Fiorina. Jason Redmond/AP

Republican candidate Carl Paladino looks over at Democratic candidate Andrew Cuomo as he speaks during the 2010 New York State Gubernatorial debate held at Hoftstra University in Hempstead, N.Y. on Oct. 18. At center is Rent is 2 Damn High candidate Jimmy McMillan. Kathy Kmonicek/AP

Former President Bill Clinton speaks with California Attorney General and Democratic Gubernatorial Candidate Jerry Brown (r.) during a California Democratic Party rally with Lieutenant Governor Candidate Gavin Newsom on the San Jose State University campus on Oct. 17, in San Jose, Calif. Tony Avelar/AP

In this Oct. 18 photo, campaign workers and volunteers walk past an early voting polling place in Little Rock, Ark. Election Day already is over for more than 3 million Americans, and a surprising number of them are Democrats. Perhaps 30 percent or more of all votes are likely to be cast early. Danny Johnston/AP

On Friday, Russia's sports ministry denied accusations of state-sponsored doping that implicate more than 1,000 athletes across more than 30 sports in sample swapping, tampering with samples, and taking steroid cocktails designed to evade Olympic testing.